α-杂原子取代的γ、δ-不饱和酮的分子内 [2+2] 环加成反应

IF 2.8 4区化学 Q1 CHEMISTRY, ORGANIC Asian Journal of Organic Chemistry Pub Date : 2024-10-01 DOI:10.1002/ajoc.202400302

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引用次数: 0

摘要

为制备 1-异原子取代的双环[2.1.1]己烷-5-酮，开发了一种改进的分子内酮[2+2]环化合成程序。研究发现，使用 Mukaiyama 试剂（2-氯-N-甲基吡啶鎓碘化物）是高效生成用于环化反应的 α-杂原子取代均烯丙基酮中间体的关键。通过制备伏替西汀的生物异构变体，证明了所得双环酮的合成用途。

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Intramolecular [2+2] Cycloadditions of α‐Heteroatom Substituted γ,δ‐Unsaturated Ketenes

An improved synthetic procedure for the intramolecular ketene [2+2] cycloaddition was developed for the preparation of 1‐heteroatom‐substituted bicyclo[2.1.1]hexan‐5‐ones. It was found that the use of the Mukaiyama reagent (2‐chloro‐N‐methyl‐pyridinium iodide) was key to efficiently generate the α‐heteroatom substituted homoallyl ketene intermediate for the cycloaddition reaction. The synthetic utility of the resulting bicyclic ketone was demonstrated through the preparation of a saturated variant of vortioxetine.

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来源期刊

Asian Journal of Organic Chemistry CHEMISTRY, ORGANIC-

CiteScore

4.70

自引率

3.70%

发文量

372

期刊介绍： Organic chemistry is the fundamental science that stands at the heart of chemistry, biology, and materials science. Research in these areas is vigorous and truly international, with three major regions making almost equal contributions: America, Europe and Asia. Asia now has its own top international organic chemistry journal—the Asian Journal of Organic Chemistry (AsianJOC) The AsianJOC is designed to be a top-ranked international research journal and publishes primary research as well as critical secondary information from authors across the world. The journal covers organic chemistry in its entirety. Authors and readers come from academia, the chemical industry, and government laboratories.